Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2023     22.4    38.4    17.5    16.0    12.2    15.5    10.9     6.4    10.4    51.1    71.1                
    2022     35.8    66.0    48.3    58.2    27.9    31.8    16.3     0.0     0.2    71.6    54.1    57.4   468  
    2021                                                                     75.4    88.4   101.6    56.6        
    2020    194.5   100.8    26.7    24.9    24.1    22.3     7.1    17.0    44.2    73.1                        
    2019      0.0    36.8    17.8    26.9    25.9    10.9    18.3    16.8    51.5    64.5    55.6   104.4   429  
    2018     60.4    16.5     0.0    27.4     8.6    14.2     0.0     1.5     9.9    46.2    14.4     0.5   200  
    2017     24.9    63.0    62.5     0.5     4.6    13.7     1.5     1.8    14.2    86.3   120.6    91.9   486  
    2016     53.8   101.1    60.9    11.9    11.2    19.1     9.4     6.9    15.0   108.7    80.0   112.3   590  
    2015     92.7    72.4    72.1     7.9     1.3     3.8     9.6    25.9    36.3   106.4   165.6    60.9   655  
    2014     84.3   116.3   100.6    44.4    19.6     4.3     5.1    12.2    37.8    85.3    95.3    62.5   668  
    2013     57.9    41.6    67.3    68.6    38.9    12.5     0.0    23.6   122.9    21.0    57.6    39.6   552  
    2012     94.7    64.5    45.7    33.3    18.8    34.5    14.5     3.6     1.3   130.5   101.8    99.3   643  
    2011                                                                             66.3   137.2    54.8        
    2010     77.7    20.8    50.3    30.0    42.7    12.7     0.8                                                
    2009    101.6    18.3    41.6    36.6    21.6     4.6     8.6    13.7    31.7   102.9   168.6    39.4   589  
    2008     48.0    42.4    49.8    19.5    12.2    13.5     6.6    31.2     7.1    29.7   105.6    62.0   428  
    2007    166.9    64.0    91.2    15.5     9.1    16.5    25.9    14.5    12.9    48.5    59.2   119.6   644  
    2006                                      2.3    15.7     2.5     2.8    22.9    33.8   251.2    97.0        
 Average     18      15       9      12      31      71     102      71      74      58      50      28     529  
 Std Dev     12       9       7      10      32      31      58      33      52      31      27      18     135